Sunboard Panel Design

Radiant floor heat is the most comfortable and efficient way to heat your home or building with unsurpassed temperature control and flexibility in zoning. For many years, typical applications for radiant systems involved embedding tubing in concrete slabs or pouring concrete over tubing stapled to sub-floors. Radiant heat provides a superior alternative to concrete with numerous advantages:

Sunboard Radiant Heat Panels are designed for simple, efficient installation over a variety of construction types. Sunboardpanel™ is ideal in new construction or renovations; Adding only 1/2", 5/8", 3/4" or 1"  the existing floor height, panels provide a superior performing radiant heating system.

  • Even distribution of heat
  • Easy layout and installation
  • Lightweight - 5 times lighter than concrete
  • No need for structural upgrades
  • Compatible with most floor coverings
  • Pex tubing 8" on center
  • Composite board or furniture grade plywood are the material choices for Sunboard.

How It Works

Sunboardpanel™ is made of 3/4" thick composite board or furniture grade plywood for standard 1/2" Pex tubing, 1/2" or 5/8" thick panels are available upon request for height issues, grooved and laminated with a highly conductive aluminum to efficiently transfer heat from the radiant panel to the floor surface, creating a nice warm floor.

Old radiant heat systems in concrete or under subfloor work, but very inefficiently. They must first warm a large thermal mass before heating the floor and space. These systems transfer heat very slowly and can be difficult to control. Our pex panels are installed directly under the finished floor for greatly improved response time with minimal "thermal lag" to overcome.

R-Value of Floor Coverings
Flooring covering choices are also very important since they impact the system design and performance. While our radiant panels will work with most floor coverings, it is important to realize that all floor coverings offer a resistance to heat transfer as measured by their R-Value. The higher the R-Value of the floor covering, the higher water temperature it takes to overcome this resistance for a given heat output requirement. (Please contact us for more information about your floor covering.)

Sunboardpanel™ Requirements

Tubing Requirements:
Our radiant pex panel utilizes 5/16", 3/8", 1/2" or 5/8" Pex@ Tubing. Loop lengths should be designed according to the project.

A. Because the panels are based on 8" on center spacing a tubing factor of 1.5 is used.To determine the required amount of pipe multiply the net square footage of the room by 1.5. The result is the total amount of pipe for the panels only. Supply/return leader lengths must also be added.

B. Number of loops/manifold size: To determine the total number of loops required, take your total loop lengths for the area and divide it by the appropriate tubing length the round it up to the next loop.
Examples:

  • 5/16" Pex tubing maximum loop length 200 lin.ft.
  • 3/8" Pex tubing maximum loop length 250 lin.ft.
  • 1/2" Pex tubing maximum loop length 300 lin.ft.
  • 5/8" Pex tubing maximum loop length 400 lin.ft.

Note: These loop lengths are averaged, you need to take into consideration flow rate, water temperature and BTU load.

C. SunboardpanelTM Requirements: To estimate the number of panels needed, multiply the square footage of each room by the following 10% allowance for waste them divide by 8 sq. ft. to equal number of panels.

Example: 400 sq. ft. x 10% = 40 sq. ft. + 400 sq. ft. = 440 sq. ft. + 8 sq. ft.
55 panels needed for this project.

Specifications for Sunboardpanel™